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Influence of a Complex Masker's Time Structure on Masking

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Thresholds of continuous test tones masked by one subharmonic masker tone (octave masking) or by two subharmonic masker tones are measured. As variables, the phase relations between the masker tones (φ 2) on one hand and the test tone (φ T) on the other hand are considered. Masking effects are studied for unharmonic test-frequencies as function of the phase angle φ 2 as well. In that case differences in masked thresholds up to 17 dB occur, although only φ 2 is varied. Moreover, the masking of a series of test tone impulses with a repetition rate equal to the fundamental frequency of a complex masker is measured as a function of the temporal shift of the impulses through the period of the masker. The produced “masking period patterns” reveal the temporal fine structure of masking. Its alterations seem to be the origin of the dependence of the masked threshold of continuous tones on the phase angle φ 2.
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Document Type: Research Article

Publication date: January 1, 1976

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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